[ 4687.432942][T24699] gre: GRE over IPv4 demultiplexor driver
[ 4689.635095][T24722] ip_gre: GRE over IPv4 tunneling driver
[ 4712.602820][T24925] ping (24925) used greatest stack depth: 23456 bytes left
[ 4755.420954][T25296] ip6_gre: GRE over IPv6 tunneling driver
[ 4773.591375][T25451] ping (25451) used greatest stack depth: 23008 bytes left
[ 4801.913899][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4808.249832][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4813.625867][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4820.025842][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!